C．Go to sleep． D．Take exercise．
31．According to the author， ． A．it's no use trying to change our situation B．parents shouldn't push their children too hard C．people should have fun more often in their life
D．parents today spend too much money on their children．
32．（8分）It took 100years，but finally，scientists proved Albert Einstein's theory that gravitational waves（引力波）exist．
The waves were predicted as part of Einstein's general theory of relativity nearly 100years ago．It was the theory of the physics behind the workings of our world and the universe．
The idea was that the waves are like waves in space，caused by some of the violent and energetic processes in the universe．For example，two black holes crashing into each other．
Now a group of scientists，including ones from Caltech，MIT and the LIGO Scientific，Collaboration finally found the gravitational waves．
David Reitze is the executive director of the LIGO observatory at Caltech． \．We did it!\ What are these gravitational waves？
Well，imagine throwing a rock into a pond．When the rock hits the flat surface of the water，it creates waves．Space﹣time is like the surface of the water．So that means gravitational waves are like the waves moving out from where the rock hits the water． It might be hard to understand，but those gravitational waves expand and contract space and time as they move through space．And when they get to the Earth，the waves pass through，and they contract and expand the planet as the waves go by． It was Einstein who said these gravitational waves should be observable．
But these are not huge waves．They are very，very small，which is why it took so long to find them．You cannot see them with your eyes．They are smaller than the size of
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an atom．
How did the scientists find them？
They used a giant scientific tool called LIGO，which stands for the Laser Interferometer Gravitational﹣Wave Observatory．The billion﹣dollar LIGO project is two L﹣shaped observatories．One is in Louisiana and the other in Washington state． For years，scientists have been watching two black holes in another faraway galaxy．The two were spinning around each other，moving closer and closer together．When they finally crashed into each other，it was with such power and force that gravitational waves rang throughout the universe，like a giant bell． Those waves，traveling at the speed of light，finally reached the Earth，some l.3billion years later．They are the same waves that the scientists announced this past week． So，what does this discovery mean？
Our understanding of the heavens changed dramatically． 32．What are gravitational waves about？ A．About the workings of the universe． B．About how black holes form． C．About how the universe began．
D．About how the waves form on the surface of water．
33．The underlined sentence\black holes crashing into each other%used to express ．
A．how the universe begins to exist B．how gravitational waves form
C．how new black holes appear D．how the earth is affected
34．Why are gravitational waves difficult to find？ A．Because they are too small． B．Because they are far away． C．Because they seldom occur． D．Because they have disappeared．
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35．With the discovery of gravitational waves，we'll ． A．create a new world B．make full use of gravitational waves
C．understand the universe in a new way D．avoid being hit by black holes．
四、词汇运用（共5小题；每小题1分，满分5分）A）根据句意，用所给单词的正确形式填空，每空一词．
36．（1分）It's important to make full use of every minute by managing your time （wise）．
37．（1分）John is fond of sports，so he is now much （health） than before． 38．（1分）Many young people want to become cartoon （art） in the future． 39．（1分）Neil Armstrong is the first man to walk on the Moon．It was brave of him to go to a place that was （know） to people at that time．
40．（1分）Let's take the lift up to the （twenty） floor．It's tiring to walk upstairs．
四、B）根据句意及汉语提示，写出各单词的正确形式，每空一词．
41．（1分）You must （标注）the words in bright purple by heart．They are very useful．
42．（1分）Describe what happened as （清楚） as possible，including all parts of the event．
43．（1分）We should take actions to prevent water （污染） because people can't live without water．
44．（1分）It's not too difficult，but I still can't bring all these words together into a （完整的） sentence．
45．（1分）Our teacher always tell us that we can only achieve success （凭借） hard work．
五、短文填空（共1小题；每小题10分，满分10分）
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46．（10分）Spring is the season between winter and summer when the weather becomes warmer and plants start to grow again．Spring is bringing more activities with natural views，and s（46） arranged events．
In Tibet，in a wild peach forest，each tree is more than 100years old，and there are more than 1，200of them．The s （47） flower is also on the other side of China，in Zhejiang province．Tourists gathered here for the peach flower blooming（盛开） p（48） of 15days．In an ancient town in Yunnan's Dali，pear flowers are in full bloom．The show of the old trees has been a main industry here i（49） of producing fruit．
In Xinjiang in N（50） China，it is apricot（杏子） flower tourism season in Turpan，even a s（51） tourism train was opened for it．And it is also about enjoying performances and food．
More than 50，000tourists from the country are t（52） part in this\Xinjiang's First Spring．\（53） about bird watching．In Huichun，more than 100，000migrant birds have flown here from the South s（54） March．It is close to the Sea of Japan，an ideal habitat for birds．
In Luonan in Shanxi province，herons（苍鹭）have lived o（55） these two old trees for several hundred years．The large bird is on the endangered animal list．Experts say it is a rare thing to see them flying in groups．The village is also seeing more and more spectators coming here for this spectacular view．
六、任务型阅读（共2小题；每小题5分，满分10分）
56．（5分）Parents of children away at college often worry about how their children are dealing with their life．Are they eating properly？Are they getting enough exercise？According to a new study，these worries may not be completely wrong．Meg Small，a researcher，says that only one third of college students have a healthy diet．
Fortunately，according to the research，students seem to be healthier on the days when they communicate with their parents．Students at a large US university were
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asked to complete some surveys．The surveys included questions about how much time students spent talking to their parents and questions about their eating habits and activity levels．
During the two﹣week survey，it was found that they ate 14% more fruits and vegetables，and were 50% more likely to take part in at least 30minutes of sports or activities on the days when they communicated with their parents for 30minutes or more．
Meg Small believes that some parents may directly remind their children to eat better foods and take part in activities，but it is also suggested that even if healthy living was not discussed，the very act of having communicated with their parents can be enough to encourage them to make healthier choices and take better care of themselves．
This study suggests that the more parents communicate with their children，the healthier lifestyles their children will lead．However，it is equally important to get a balance．By calling too often，parents may quite easily appear to distrust their children，while calling too little，or not at all，sends the message that they do not care． 阅读以上信息，用恰当的词完成下面的表格．每空一词． Problem About the study Most college students eat unhealthily at school． ●Students at a U．S．university were asked to complete some surveys，which （56） two weeks． ●The students were asked about the time they （57） in chatting with their parents，their eating habits and activity levels． Finding of the study （59） Communicating with parents increases the （58） of students'eating more healthily and exercising more often． Communicating with the children in a balanced way： ●Don't call too often to prevent the children feeling not being trusted． ●Don't call too little to make the children feel not being （60）
about． 第10页（共17页）